lustre/osc/lproc_osc.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2011, 2017, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  * Lustre is a trademark of Sun Microsystems, Inc.
  31  */
  32 #define DEBUG_SUBSYSTEM S_CLASS
  33
  34 #include <linux/version.h>
  35 #include <asm/statfs.h>
  36 #include <obd_cksum.h>
  37 #include <obd_class.h>
  38 #include <lprocfs_status.h>
  39 #include <linux/seq_file.h>
  40 #include <lustre_osc.h>
  41
  42 #include "osc_internal.h"
  43
  44 static ssize_t active_show(struct kobject *kobj, struct attribute *attr,
  45                            char *buf)
  46 {
  47         struct obd_device *dev = container_of(kobj, struct obd_device,
  48                                               obd_kset.kobj);
  49         int rc;
  50
  51         LPROCFS_CLIMP_CHECK(dev);
  52         rc = sprintf(buf, "%d\n", !dev->u.cli.cl_import->imp_deactive);
  53         LPROCFS_CLIMP_EXIT(dev);
  54         return rc;
  55 }
  56
  57 static ssize_t active_store(struct kobject *kobj, struct attribute *attr,
  58                             const char *buffer, size_t count)
  59 {
  60         struct obd_device *dev = container_of(kobj, struct obd_device,
  61                                               obd_kset.kobj);
  62         bool val;
  63         int rc;
  64
  65         rc = kstrtobool(buffer, &val);
  66         if (rc)
  67                 return rc;
  68
  69         /* opposite senses */
  70         if (dev->u.cli.cl_import->imp_deactive == val)
  71                 rc = ptlrpc_set_import_active(dev->u.cli.cl_import, val);
  72         else
  73                 CDEBUG(D_CONFIG, "activate %u: ignoring repeat request\n",
  74                        (unsigned int)val);
  75
  76         return count;
  77 }
  78 LUSTRE_RW_ATTR(active);
  79
  80 static ssize_t max_rpcs_in_flight_show(struct kobject *kobj,
  81                                        struct attribute *attr,
  82                                        char *buf)
  83 {
  84         struct obd_device *dev = container_of(kobj, struct obd_device,
  85                                               obd_kset.kobj);
  86         struct client_obd *cli = &dev->u.cli;
  87         ssize_t len;
  88
  89         spin_lock(&cli->cl_loi_list_lock);
  90         len = sprintf(buf, "%u\n", cli->cl_max_rpcs_in_flight);
  91         spin_unlock(&cli->cl_loi_list_lock);
  92         return len;
  93 }
  94
  95 static ssize_t max_rpcs_in_flight_store(struct kobject *kobj,
  96                                         struct attribute *attr,
  97                                         const char *buffer,
  98                                         size_t count)
  99 {
 100         struct obd_device *dev = container_of(kobj, struct obd_device,
 101                                               obd_kset.kobj);
 102         struct client_obd *cli = &dev->u.cli;
 103         int adding, added, req_count;
 104         unsigned int val;
 105         int rc;
 106
 107         rc = kstrtouint(buffer, 0, &val);
 108         if (rc)
 109                 return rc;
 110
 111         if (val == 0 || val > OSC_MAX_RIF_MAX)
 112                 return -ERANGE;
 113
 114         LPROCFS_CLIMP_CHECK(dev);
 115
 116         adding = (int)val - cli->cl_max_rpcs_in_flight;
 117         req_count = atomic_read(&osc_pool_req_count);
 118         if (adding > 0 && req_count < osc_reqpool_maxreqcount) {
 119                 /*
 120                  * There might be some race which will cause over-limit
 121                  * allocation, but it is fine.
 122                  */
 123                 if (req_count + adding > osc_reqpool_maxreqcount)
 124                         adding = osc_reqpool_maxreqcount - req_count;
 125
 126                 added = osc_rq_pool->prp_populate(osc_rq_pool, adding);
 127                 atomic_add(added, &osc_pool_req_count);
 128         }
 129
 130         spin_lock(&cli->cl_loi_list_lock);
 131         cli->cl_max_rpcs_in_flight = val;
 132         client_adjust_max_dirty(cli);
 133         spin_unlock(&cli->cl_loi_list_lock);
 134
 135         LPROCFS_CLIMP_EXIT(dev);
 136         return count;
 137 }
 138 LUSTRE_RW_ATTR(max_rpcs_in_flight);
 139
 140 static ssize_t max_dirty_mb_show(struct kobject *kobj,
 141                                  struct attribute *attr,
 142                                  char *buf)
 143 {
 144         struct obd_device *dev = container_of(kobj, struct obd_device,
 145                                               obd_kset.kobj);
 146         struct client_obd *cli = &dev->u.cli;
 147         unsigned long val;
 148
 149         spin_lock(&cli->cl_loi_list_lock);
 150         val = PAGES_TO_MiB(cli->cl_dirty_max_pages);
 151         spin_unlock(&cli->cl_loi_list_lock);
 152
 153         return sprintf(buf, "%lu\n", val);
 154 }
 155
 156 static ssize_t max_dirty_mb_store(struct kobject *kobj,
 157                                   struct attribute *attr,
 158                                   const char *buffer,
 159                                   size_t count)
 160 {
 161         struct obd_device *dev = container_of(kobj, struct obd_device,
 162                                               obd_kset.kobj);
 163         struct client_obd *cli = &dev->u.cli;
 164         unsigned long pages_number, max_dirty_mb;
 165         int rc;
 166
 167         rc = kstrtoul(buffer, 10, &max_dirty_mb);
 168         if (rc)
 169                 return rc;
 170
 171         pages_number = MiB_TO_PAGES(max_dirty_mb);
 172
 173         if (pages_number >= MiB_TO_PAGES(OSC_MAX_DIRTY_MB_MAX) ||
 174             pages_number > cfs_totalram_pages() / 4) /* 1/4 of RAM */
 175                 return -ERANGE;
 176
 177         spin_lock(&cli->cl_loi_list_lock);
 178         cli->cl_dirty_max_pages = pages_number;
 179         osc_wake_cache_waiters(cli);
 180         spin_unlock(&cli->cl_loi_list_lock);
 181
 182         return count;
 183 }
 184 LUSTRE_RW_ATTR(max_dirty_mb);
 185
 186 LUSTRE_ATTR(ost_conn_uuid, 0444, conn_uuid_show, NULL);
 187 LUSTRE_RO_ATTR(conn_uuid);
 188
 189 LUSTRE_RW_ATTR(ping);
 190
 191 static int osc_cached_mb_seq_show(struct seq_file *m, void *v)
 192 {
 193         struct obd_device *dev = m->private;
 194         struct client_obd *cli = &dev->u.cli;
 195         int shift = 20 - PAGE_SHIFT;
 196
 197         seq_printf(m, "used_mb: %ld\n"
 198                    "busy_cnt: %ld\n"
 199                    "reclaim: %llu\n",
 200                    (atomic_long_read(&cli->cl_lru_in_list) +
 201                     atomic_long_read(&cli->cl_lru_busy)) >> shift,
 202                     atomic_long_read(&cli->cl_lru_busy),
 203                    cli->cl_lru_reclaim);
 204
 205         return 0;
 206 }
 207
 208 /* shrink the number of caching pages to a specific number */
 209 static ssize_t osc_cached_mb_seq_write(struct file *file,
 210                                        const char __user *buffer,
 211                                        size_t count, loff_t *off)
 212 {
 213         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 214         struct client_obd *cli = &dev->u.cli;
 215         u64 pages_number;
 216         const char *tmp;
 217         long rc;
 218         char kernbuf[128];
 219
 220         if (count >= sizeof(kernbuf))
 221                 return -EINVAL;
 222
 223         if (copy_from_user(kernbuf, buffer, count))
 224                 return -EFAULT;
 225         kernbuf[count] = 0;
 226
 227         tmp = lprocfs_find_named_value(kernbuf, "used_mb:", &count);
 228         rc = sysfs_memparse(tmp, count, &pages_number, "MiB");
 229         if (rc < 0)
 230                 return rc;
 231
 232         pages_number >>= PAGE_SHIFT;
 233
 234         rc = atomic_long_read(&cli->cl_lru_in_list) - pages_number;
 235         if (rc > 0) {
 236                 struct lu_env *env;
 237                 __u16 refcheck;
 238
 239                 env = cl_env_get(&refcheck);
 240                 if (!IS_ERR(env)) {
 241                         (void)osc_lru_shrink(env, cli, rc, true);
 242                         cl_env_put(env, &refcheck);
 243                 }
 244         }
 245
 246         return count;
 247 }
 248
 249 LPROC_SEQ_FOPS(osc_cached_mb);
 250
 251 static ssize_t cur_dirty_bytes_show(struct kobject *kobj,
 252                                     struct attribute *attr,
 253                                     char *buf)
 254 {
 255         struct obd_device *dev = container_of(kobj, struct obd_device,
 256                                               obd_kset.kobj);
 257         struct client_obd *cli = &dev->u.cli;
 258         ssize_t len;
 259
 260         spin_lock(&cli->cl_loi_list_lock);
 261         len = sprintf(buf, "%lu\n", cli->cl_dirty_pages << PAGE_SHIFT);
 262         spin_unlock(&cli->cl_loi_list_lock);
 263
 264         return len;
 265 }
 266 LUSTRE_RO_ATTR(cur_dirty_bytes);
 267
 268 static int osc_cur_grant_bytes_seq_show(struct seq_file *m, void *v)
 269 {
 270         struct obd_device *dev = m->private;
 271         struct client_obd *cli = &dev->u.cli;
 272
 273         spin_lock(&cli->cl_loi_list_lock);
 274         seq_printf(m, "%lu\n", cli->cl_avail_grant);
 275         spin_unlock(&cli->cl_loi_list_lock);
 276         return 0;
 277 }
 278
 279 static ssize_t osc_cur_grant_bytes_seq_write(struct file *file,
 280                                              const char __user *buffer,
 281                                              size_t count, loff_t *off)
 282 {
 283         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 284         struct client_obd *cli = &obd->u.cli;
 285         char kernbuf[22] = "";
 286         u64 val;
 287         int rc;
 288
 289         if (obd == NULL)
 290                 return 0;
 291
 292         if (count >= sizeof(kernbuf))
 293                 return -EINVAL;
 294
 295         if (copy_from_user(kernbuf, buffer, count))
 296                 return -EFAULT;
 297         kernbuf[count] = 0;
 298
 299         rc = sysfs_memparse(kernbuf, count, &val, "MiB");
 300         if (rc < 0)
 301                 return rc;
 302
 303         /* this is only for shrinking grant */
 304         spin_lock(&cli->cl_loi_list_lock);
 305         if (val >= cli->cl_avail_grant) {
 306                 spin_unlock(&cli->cl_loi_list_lock);
 307                 return 0;
 308         }
 309
 310         spin_unlock(&cli->cl_loi_list_lock);
 311
 312         LPROCFS_CLIMP_CHECK(obd);
 313         if (cli->cl_import->imp_state == LUSTRE_IMP_FULL)
 314                 rc = osc_shrink_grant_to_target(cli, val);
 315         LPROCFS_CLIMP_EXIT(obd);
 316
 317         return rc ? rc : count;
 318 }
 319 LPROC_SEQ_FOPS(osc_cur_grant_bytes);
 320
 321 static ssize_t cur_lost_grant_bytes_show(struct kobject *kobj,
 322                                          struct attribute *attr,
 323                                          char *buf)
 324 {
 325         struct obd_device *dev = container_of(kobj, struct obd_device,
 326                                               obd_kset.kobj);
 327         struct client_obd *cli = &dev->u.cli;
 328         ssize_t len;
 329
 330         spin_lock(&cli->cl_loi_list_lock);
 331         len = sprintf(buf, "%lu\n", cli->cl_lost_grant);
 332         spin_unlock(&cli->cl_loi_list_lock);
 333         return len;
 334 }
 335 LUSTRE_RO_ATTR(cur_lost_grant_bytes);
 336
 337 static ssize_t grant_shrink_interval_show(struct kobject *kobj,
 338                                           struct attribute *attr,
 339                                           char *buf)
 340 {
 341         struct obd_device *obd = container_of(kobj, struct obd_device,
 342                                               obd_kset.kobj);
 343
 344         return sprintf(buf, "%lld\n", obd->u.cli.cl_grant_shrink_interval);
 345 }
 346
 347 static ssize_t grant_shrink_interval_store(struct kobject *kobj,
 348                                            struct attribute *attr,
 349                                            const char *buffer,
 350                                            size_t count)
 351 {
 352         struct obd_device *obd = container_of(kobj, struct obd_device,
 353                                               obd_kset.kobj);
 354         unsigned int val;
 355         int rc;
 356
 357         rc = kstrtouint(buffer, 0, &val);
 358         if (rc)
 359                 return rc;
 360
 361         if (val == 0)
 362                 return -ERANGE;
 363
 364         obd->u.cli.cl_grant_shrink_interval = val;
 365         osc_update_next_shrink(&obd->u.cli);
 366         osc_schedule_grant_work();
 367
 368         return count;
 369 }
 370 LUSTRE_RW_ATTR(grant_shrink_interval);
 371
 372 static ssize_t checksums_show(struct kobject *kobj,
 373                               struct attribute *attr,
 374                               char *buf)
 375 {
 376         struct obd_device *obd = container_of(kobj, struct obd_device,
 377                                               obd_kset.kobj);
 378
 379         return sprintf(buf, "%d\n", obd->u.cli.cl_checksum ? 1 : 0);
 380 }
 381
 382 static ssize_t checksums_store(struct kobject *kobj,
 383                                struct attribute *attr,
 384                                const char *buffer,
 385                                size_t count)
 386 {
 387         struct obd_device *obd = container_of(kobj, struct obd_device,
 388                                               obd_kset.kobj);
 389         bool val;
 390         int rc;
 391
 392         rc = kstrtobool(buffer, &val);
 393         if (rc)
 394                 return rc;
 395
 396         obd->u.cli.cl_checksum = val;
 397
 398         return count;
 399 }
 400 LUSTRE_RW_ATTR(checksums);
 401
 402 static int osc_checksum_type_seq_show(struct seq_file *m, void *v)
 403 {
 404         struct obd_device *obd = m->private;
 405         int i;
 406         DECLARE_CKSUM_NAME;
 407
 408         if (obd == NULL)
 409                 return 0;
 410
 411         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 412                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 413                         continue;
 414                 if (obd->u.cli.cl_cksum_type == (1 << i))
 415                         seq_printf(m, "[%s] ", cksum_name[i]);
 416                 else
 417                         seq_printf(m, "%s ", cksum_name[i]);
 418         }
 419         seq_printf(m, "\n");
 420         return 0;
 421 }
 422
 423 static ssize_t osc_checksum_type_seq_write(struct file *file,
 424                                            const char __user *buffer,
 425                                            size_t count, loff_t *off)
 426 {
 427         struct obd_device *obd = ((struct seq_file *)file->private_data)->private;
 428         int i;
 429         DECLARE_CKSUM_NAME;
 430         char kernbuf[10];
 431         int rc = -EINVAL;
 432
 433         if (obd == NULL)
 434                 return 0;
 435
 436         if (count > sizeof(kernbuf) - 1)
 437                 return -EINVAL;
 438         if (copy_from_user(kernbuf, buffer, count))
 439                 return -EFAULT;
 440
 441         if (count > 0 && kernbuf[count - 1] == '\n')
 442                 kernbuf[count - 1] = '\0';
 443         else
 444                 kernbuf[count] = '\0';
 445
 446         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 447                 if (strcmp(kernbuf, cksum_name[i]) == 0) {
 448                         obd->u.cli.cl_preferred_cksum_type = BIT(i);
 449                         if (obd->u.cli.cl_supp_cksum_types & BIT(i)) {
 450                                 obd->u.cli.cl_cksum_type = BIT(i);
 451                                 rc = count;
 452                         } else {
 453                                 rc = -ENOTSUPP;
 454                         }
 455                         break;
 456                 }
 457         }
 458         return rc;
 459 }
 460 LPROC_SEQ_FOPS(osc_checksum_type);
 461
 462 static ssize_t resend_count_show(struct kobject *kobj,
 463                                  struct attribute *attr,
 464                                  char *buf)
 465 {
 466         struct obd_device *obd = container_of(kobj, struct obd_device,
 467                                               obd_kset.kobj);
 468
 469         return sprintf(buf, "%u\n", atomic_read(&obd->u.cli.cl_resends));
 470 }
 471
 472 static ssize_t resend_count_store(struct kobject *kobj,
 473                                   struct attribute *attr,
 474                                   const char *buffer,
 475                                   size_t count)
 476 {
 477         struct obd_device *obd = container_of(kobj, struct obd_device,
 478                                               obd_kset.kobj);
 479         unsigned int val;
 480         int rc;
 481
 482         rc = kstrtouint(buffer, 10, &val);
 483         if (rc)
 484                 return rc;
 485
 486         atomic_set(&obd->u.cli.cl_resends, val);
 487
 488         return count;
 489 }
 490 LUSTRE_RW_ATTR(resend_count);
 491
 492 static ssize_t checksum_dump_show(struct kobject *kobj,
 493                                   struct attribute *attr,
 494                                   char *buf)
 495 {
 496         struct obd_device *obd = container_of(kobj, struct obd_device,
 497                                               obd_kset.kobj);
 498
 499         return sprintf(buf, "%d\n", obd->u.cli.cl_checksum_dump ? 1 : 0);
 500 }
 501
 502 static ssize_t checksum_dump_store(struct kobject *kobj,
 503                                    struct attribute *attr,
 504                                    const char *buffer,
 505                                    size_t count)
 506 {
 507         struct obd_device *obd = container_of(kobj, struct obd_device,
 508                                               obd_kset.kobj);
 509         bool val;
 510         int rc;
 511
 512         rc = kstrtobool(buffer, &val);
 513         if (rc)
 514                 return rc;
 515
 516         obd->u.cli.cl_checksum_dump = val;
 517
 518         return count;
 519 }
 520 LUSTRE_RW_ATTR(checksum_dump);
 521
 522 static ssize_t contention_seconds_show(struct kobject *kobj,
 523                                        struct attribute *attr,
 524                                        char *buf)
 525 {
 526         struct obd_device *obd = container_of(kobj, struct obd_device,
 527                                               obd_kset.kobj);
 528         struct osc_device *od = obd2osc_dev(obd);
 529
 530         return sprintf(buf, "%lld\n", od->od_contention_time);
 531 }
 532
 533 static ssize_t contention_seconds_store(struct kobject *kobj,
 534                                         struct attribute *attr,
 535                                         const char *buffer,
 536                                         size_t count)
 537 {
 538         struct obd_device *obd = container_of(kobj, struct obd_device,
 539                                               obd_kset.kobj);
 540         struct osc_device *od = obd2osc_dev(obd);
 541         unsigned int val;
 542         int rc;
 543
 544         rc = kstrtouint(buffer, 0, &val);
 545         if (rc)
 546                 return rc;
 547
 548         od->od_contention_time = val;
 549
 550         return count;
 551 }
 552 LUSTRE_RW_ATTR(contention_seconds);
 553
 554 static ssize_t lockless_truncate_show(struct kobject *kobj,
 555                                       struct attribute *attr,
 556                                       char *buf)
 557 {
 558         struct obd_device *obd = container_of(kobj, struct obd_device,
 559                                               obd_kset.kobj);
 560         struct osc_device *od = obd2osc_dev(obd);
 561
 562         return sprintf(buf, "%u\n", od->od_lockless_truncate);
 563 }
 564
 565 static ssize_t lockless_truncate_store(struct kobject *kobj,
 566                                        struct attribute *attr,
 567                                        const char *buffer,
 568                                        size_t count)
 569 {
 570         struct obd_device *obd = container_of(kobj, struct obd_device,
 571                                               obd_kset.kobj);
 572         struct osc_device *od = obd2osc_dev(obd);
 573         bool val;
 574         int rc;
 575
 576         rc = kstrtobool(buffer, &val);
 577         if (rc)
 578                 return rc;
 579
 580         od->od_lockless_truncate = val;
 581
 582         return count;
 583 }
 584 LUSTRE_RW_ATTR(lockless_truncate);
 585
 586 static ssize_t destroys_in_flight_show(struct kobject *kobj,
 587                                        struct attribute *attr,
 588                                        char *buf)
 589 {
 590         struct obd_device *obd = container_of(kobj, struct obd_device,
 591                                               obd_kset.kobj);
 592
 593         return sprintf(buf, "%u\n",
 594                        atomic_read(&obd->u.cli.cl_destroy_in_flight));
 595 }
 596 LUSTRE_RO_ATTR(destroys_in_flight);
 597
 598 LPROC_SEQ_FOPS_RW_TYPE(osc, obd_max_pages_per_rpc);
 599
 600 LUSTRE_RW_ATTR(short_io_bytes);
 601
 602 #ifdef CONFIG_PROC_FS
 603 static int osc_unstable_stats_seq_show(struct seq_file *m, void *v)
 604 {
 605         struct obd_device *dev = m->private;
 606         struct client_obd *cli = &dev->u.cli;
 607         long pages;
 608         int mb;
 609
 610         pages = atomic_long_read(&cli->cl_unstable_count);
 611         mb    = (pages * PAGE_SIZE) >> 20;
 612
 613         seq_printf(m, "unstable_pages: %20ld\n"
 614                    "unstable_mb:              %10d\n",
 615                    pages, mb);
 616         return 0;
 617 }
 618 LPROC_SEQ_FOPS_RO(osc_unstable_stats);
 619
 620 static ssize_t idle_timeout_show(struct kobject *kobj, struct attribute *attr,
 621                                  char *buf)
 622 {
 623         struct obd_device *obd = container_of(kobj, struct obd_device,
 624                                               obd_kset.kobj);
 625         struct client_obd *cli = &obd->u.cli;
 626         int ret;
 627
 628         LPROCFS_CLIMP_CHECK(obd);
 629         ret = sprintf(buf, "%u\n", cli->cl_import->imp_idle_timeout);
 630         LPROCFS_CLIMP_EXIT(obd);
 631
 632         return ret;
 633 }
 634
 635 static ssize_t idle_timeout_store(struct kobject *kobj, struct attribute *attr,
 636                                   const char *buffer, size_t count)
 637 {
 638         struct obd_device *dev = container_of(kobj, struct obd_device,
 639                                               obd_kset.kobj);
 640         struct client_obd *cli = &dev->u.cli;
 641         struct ptlrpc_request *req;
 642         unsigned int idle_debug = 0;
 643         unsigned int val;
 644         int rc;
 645
 646         if (strncmp(buffer, "debug", 5) == 0) {
 647                 idle_debug = D_CONSOLE;
 648         } else if (strncmp(buffer, "nodebug", 6) == 0) {
 649                 idle_debug = D_HA;
 650         } else {
 651                 rc = kstrtouint(buffer, 10, &val);
 652                 if (rc)
 653                         return rc;
 654
 655                 if (val > CONNECTION_SWITCH_MAX)
 656                         return -ERANGE;
 657         }
 658
 659         LPROCFS_CLIMP_CHECK(dev);
 660         if (idle_debug) {
 661                 cli->cl_import->imp_idle_debug = idle_debug;
 662         } else {
 663                 if (!val) {
 664                         /* initiate the connection if it's in IDLE state */
 665                         req = ptlrpc_request_alloc(cli->cl_import,
 666                                                    &RQF_OST_STATFS);
 667                         if (req != NULL)
 668                                 ptlrpc_req_finished(req);
 669                 }
 670                 cli->cl_import->imp_idle_timeout = val;
 671         }
 672         LPROCFS_CLIMP_EXIT(dev);
 673
 674         return count;
 675 }
 676 LUSTRE_RW_ATTR(idle_timeout);
 677
 678 static ssize_t idle_connect_store(struct kobject *kobj, struct attribute *attr,
 679                                   const char *buffer, size_t count)
 680 {
 681         struct obd_device *dev = container_of(kobj, struct obd_device,
 682                                               obd_kset.kobj);
 683         struct client_obd *cli = &dev->u.cli;
 684         struct ptlrpc_request *req;
 685
 686         LPROCFS_CLIMP_CHECK(dev);
 687         /* to initiate the connection if it's in IDLE state */
 688         req = ptlrpc_request_alloc(cli->cl_import, &RQF_OST_STATFS);
 689         if (req)
 690                 ptlrpc_req_finished(req);
 691         ptlrpc_pinger_force(cli->cl_import);
 692         LPROCFS_CLIMP_EXIT(dev);
 693
 694         return count;
 695 }
 696 LUSTRE_WO_ATTR(idle_connect);
 697
 698 static ssize_t grant_shrink_show(struct kobject *kobj, struct attribute *attr,
 699                                  char *buf)
 700 {
 701         struct obd_device *obd = container_of(kobj, struct obd_device,
 702                                               obd_kset.kobj);
 703         struct obd_import *imp;
 704         ssize_t len;
 705
 706         LPROCFS_CLIMP_CHECK(obd);
 707         imp = obd->u.cli.cl_import;
 708         len = scnprintf(buf, PAGE_SIZE, "%d\n",
 709                         !imp->imp_grant_shrink_disabled &&
 710                         OCD_HAS_FLAG(&imp->imp_connect_data, GRANT_SHRINK));
 711         LPROCFS_CLIMP_EXIT(obd);
 712
 713         return len;
 714 }
 715
 716 static ssize_t grant_shrink_store(struct kobject *kobj, struct attribute *attr,
 717                                   const char *buffer, size_t count)
 718 {
 719         struct obd_device *dev = container_of(kobj, struct obd_device,
 720                                               obd_kset.kobj);
 721         struct obd_import *imp;
 722         bool val;
 723         int rc;
 724
 725         if (dev == NULL)
 726                 return 0;
 727
 728         rc = kstrtobool(buffer, &val);
 729         if (rc)
 730                 return rc;
 731
 732         LPROCFS_CLIMP_CHECK(dev);
 733
 734         imp = dev->u.cli.cl_import;
 735         spin_lock(&imp->imp_lock);
 736         imp->imp_grant_shrink_disabled = !val;
 737         spin_unlock(&imp->imp_lock);
 738
 739         LPROCFS_CLIMP_EXIT(dev);
 740
 741         return count;
 742 }
 743 LUSTRE_RW_ATTR(grant_shrink);
 744
 745 LPROC_SEQ_FOPS_RO_TYPE(osc, connect_flags);
 746 LPROC_SEQ_FOPS_RO_TYPE(osc, server_uuid);
 747 LPROC_SEQ_FOPS_RO_TYPE(osc, timeouts);
 748 LPROC_SEQ_FOPS_RO_TYPE(osc, state);
 749
 750 LPROC_SEQ_FOPS_RW_TYPE(osc, import);
 751 LPROC_SEQ_FOPS_RW_TYPE(osc, pinger_recov);
 752
 753 struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 754         { .name =       "connect_flags",
 755           .fops =       &osc_connect_flags_fops         },
 756         { .name =       "ost_server_uuid",
 757           .fops =       &osc_server_uuid_fops           },
 758         { .name =       "max_pages_per_rpc",
 759           .fops =       &osc_obd_max_pages_per_rpc_fops },
 760         { .name =       "osc_cached_mb",
 761           .fops =       &osc_cached_mb_fops             },
 762         { .name =       "cur_grant_bytes",
 763           .fops =       &osc_cur_grant_bytes_fops       },
 764         { .name =       "checksum_type",
 765           .fops =       &osc_checksum_type_fops         },
 766         { .name =       "timeouts",
 767           .fops =       &osc_timeouts_fops              },
 768         { .name =       "import",
 769           .fops =       &osc_import_fops                },
 770         { .name =       "state",
 771           .fops =       &osc_state_fops                 },
 772         { .name =       "pinger_recov",
 773           .fops =       &osc_pinger_recov_fops          },
 774         { .name =       "unstable_stats",
 775           .fops =       &osc_unstable_stats_fops        },
 776         { NULL }
 777 };
 778
 779 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 780 {
 781         struct timespec64 now;
 782         struct obd_device *dev = seq->private;
 783         struct client_obd *cli = &dev->u.cli;
 784         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 785         int i;
 786
 787         ktime_get_real_ts64(&now);
 788
 789         spin_lock(&cli->cl_loi_list_lock);
 790
 791         seq_printf(seq, "snapshot_time:         %lld.%09lu (secs.nsecs)\n",
 792                    (s64)now.tv_sec, now.tv_nsec);
 793         seq_printf(seq, "read RPCs in flight:  %d\n",
 794                    cli->cl_r_in_flight);
 795         seq_printf(seq, "write RPCs in flight: %d\n",
 796                    cli->cl_w_in_flight);
 797         seq_printf(seq, "pending write pages:  %d\n",
 798                    atomic_read(&cli->cl_pending_w_pages));
 799         seq_printf(seq, "pending read pages:   %d\n",
 800                    atomic_read(&cli->cl_pending_r_pages));
 801
 802         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 803         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 804         seq_printf(seq, "       rpcs   %% cum %%\n");
 805
 806         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 807         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 808
 809         read_cum = 0;
 810         write_cum = 0;
 811         for (i = 0; i < OBD_HIST_MAX; i++) {
 812                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 813                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 814
 815                 read_cum += r;
 816                 write_cum += w;
 817                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 818                            1 << i, r, pct(r, read_tot),
 819                            pct(read_cum, read_tot), w,
 820                            pct(w, write_tot),
 821                            pct(write_cum, write_tot));
 822                 if (read_cum == read_tot && write_cum == write_tot)
 823                         break;
 824         }
 825
 826         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 827         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 828         seq_printf(seq, "       rpcs   %% cum %%\n");
 829
 830         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 831         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 832
 833         read_cum = 0;
 834         write_cum = 0;
 835         for (i = 0; i < OBD_HIST_MAX; i++) {
 836                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 837                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 838                 read_cum += r;
 839                 write_cum += w;
 840                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 841                            i, r, pct(r, read_tot),
 842                            pct(read_cum, read_tot), w,
 843                            pct(w, write_tot),
 844                            pct(write_cum, write_tot));
 845                 if (read_cum == read_tot && write_cum == write_tot)
 846                         break;
 847         }
 848
 849         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 850         seq_printf(seq, "offset                rpcs   %% cum %% |");
 851         seq_printf(seq, "       rpcs   %% cum %%\n");
 852
 853         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 854         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 855
 856         read_cum = 0;
 857         write_cum = 0;
 858         for (i = 0; i < OBD_HIST_MAX; i++) {
 859                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 860                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 861                 read_cum += r;
 862                 write_cum += w;
 863                 seq_printf(seq, "%d:\t\t%10lu %3u %3u   | %10lu %3u %3u\n",
 864                            (i == 0) ? 0 : 1 << (i - 1),
 865                            r, pct(r, read_tot), pct(read_cum, read_tot),
 866                            w, pct(w, write_tot), pct(write_cum, write_tot));
 867                 if (read_cum == read_tot && write_cum == write_tot)
 868                         break;
 869         }
 870
 871         spin_unlock(&cli->cl_loi_list_lock);
 872
 873         return 0;
 874 }
 875
 876 static ssize_t osc_rpc_stats_seq_write(struct file *file,
 877                                        const char __user *buf,
 878                                        size_t len, loff_t *off)
 879 {
 880         struct seq_file *seq = file->private_data;
 881         struct obd_device *dev = seq->private;
 882         struct client_obd *cli = &dev->u.cli;
 883
 884         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 885         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 886         lprocfs_oh_clear(&cli->cl_read_page_hist);
 887         lprocfs_oh_clear(&cli->cl_write_page_hist);
 888         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 889         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 890
 891         return len;
 892 }
 893 LPROC_SEQ_FOPS(osc_rpc_stats);
 894
 895 static int osc_stats_seq_show(struct seq_file *seq, void *v)
 896 {
 897         struct timespec64 now;
 898         struct obd_device *dev = seq->private;
 899         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 900
 901         ktime_get_real_ts64(&now);
 902
 903         seq_printf(seq, "snapshot_time:         %lld.%09lu (secs.nsecs)\n",
 904                    (s64)now.tv_sec, now.tv_nsec);
 905         seq_printf(seq, "lockless_write_bytes\t\t%llu\n",
 906                    stats->os_lockless_writes);
 907         seq_printf(seq, "lockless_read_bytes\t\t%llu\n",
 908                    stats->os_lockless_reads);
 909         seq_printf(seq, "lockless_truncate\t\t%llu\n",
 910                    stats->os_lockless_truncates);
 911         return 0;
 912 }
 913
 914 static ssize_t osc_stats_seq_write(struct file *file,
 915                                    const char __user *buf,
 916                                    size_t len, loff_t *off)
 917 {
 918         struct seq_file *seq = file->private_data;
 919         struct obd_device *dev = seq->private;
 920         struct osc_stats *stats = &obd2osc_dev(dev)->od_stats;
 921
 922         memset(stats, 0, sizeof(*stats));
 923         return len;
 924 }
 925
 926 LPROC_SEQ_FOPS(osc_stats);
 927
 928 int lprocfs_osc_attach_seqstat(struct obd_device *dev)
 929 {
 930         int rc;
 931
 932         rc = lprocfs_seq_create(dev->obd_proc_entry, "osc_stats", 0644,
 933                                 &osc_stats_fops, dev);
 934         if (rc == 0)
 935                 rc = lprocfs_obd_seq_create(dev, "rpc_stats", 0644,
 936                                             &osc_rpc_stats_fops, dev);
 937
 938         return rc;
 939 }
 940 #endif /* CONFIG_PROC_FS */
 941
 942 static struct attribute *osc_attrs[] = {
 943         &lustre_attr_active.attr,
 944         &lustre_attr_checksums.attr,
 945         &lustre_attr_checksum_dump.attr,
 946         &lustre_attr_contention_seconds.attr,
 947         &lustre_attr_cur_dirty_bytes.attr,
 948         &lustre_attr_cur_lost_grant_bytes.attr,
 949         &lustre_attr_destroys_in_flight.attr,
 950         &lustre_attr_grant_shrink_interval.attr,
 951         &lustre_attr_lockless_truncate.attr,
 952         &lustre_attr_max_dirty_mb.attr,
 953         &lustre_attr_max_rpcs_in_flight.attr,
 954         &lustre_attr_short_io_bytes.attr,
 955         &lustre_attr_resend_count.attr,
 956         &lustre_attr_ost_conn_uuid.attr,
 957         &lustre_attr_conn_uuid.attr,
 958         &lustre_attr_ping.attr,
 959         &lustre_attr_idle_timeout.attr,
 960         &lustre_attr_idle_connect.attr,
 961         &lustre_attr_grant_shrink.attr,
 962         NULL,
 963 };
 964
 965 int osc_tunables_init(struct obd_device *obd)
 966 {
 967         int rc;
 968
 969         obd->obd_vars = lprocfs_osc_obd_vars;
 970         obd->obd_ktype.default_attrs = osc_attrs;
 971         rc = lprocfs_obd_setup(obd, false);
 972         if (rc)
 973                 return rc;
 974 #ifdef CONFIG_PROC_FS
 975         /* If the basic OSC proc tree construction succeeded then
 976          * lets do the rest.
 977          */
 978         rc = lprocfs_osc_attach_seqstat(obd);
 979         if (rc)
 980                 goto obd_cleanup;
 981
 982 #endif /* CONFIG_PROC_FS */
 983         rc = sptlrpc_lprocfs_cliobd_attach(obd);
 984         if (rc)
 985                 goto obd_cleanup;
 986
 987         ptlrpc_lprocfs_register_obd(obd);
 988 obd_cleanup:
 989         if (rc)
 990                 lprocfs_obd_cleanup(obd);
 991         return rc;
 992 }